Verma Pradhuman, Mahajan Princy, Puri Ankush, Kaur Sukhleen, Mehta Sakshi
Department of Oral Medicine and Radiology, Surendera Dental College and Research Institute, H.H Gardens, Power House Road, Sriganganagar, Rajasthan, India.
Indian J Dent Res. 2020 May-Jun;31(3):444-448. doi: 10.4103/ijdr.IJDR_547_17.
Mandible is a dimorphic, dense compact bone that makes it very durable and well preserved in mass disasters for personnel identification. Mandibular ramus morphometric measurements can be used for gender determination using orthopantomogram (OPG) or on dry mandibles.
To determine gender from morphometric analysis of mandibular ramus of 200 digital OPG of patients from Sriganganagar population.
The study was conducted on randomly selected digital OPG of 200 patients of both genders between the ages of 21 and 70 years taken using CS8000C machine from daily OPD. Morphometric analysis of mandibular ramus (maximum ramus breadth, minimum ramus breadth, condylar height, projective height of ramus, and coronoid height) was done twice by single maxillofacial radiologist independently at an interval of 1 day and mean of both the values were considered. The collected data was tabulated and analyzed using SPSS Software version 20 using independent ṯ-test and discriminant function analysis.
Out of total 200 subjects, 37% were male and 63% were female. Mean of minimum ramus breadth, maximum ramus height, and projected ramus height was noted significantly more among males while maximum ramus breadth was noted slightly higher in females. The overall accuracy for determining sex from mandibular ramus was found to be 77.6%, whereas for determining male and female, the accuracy was 78.4% and 76.8%, respectively.
Mandibular ramus can be used for sexual dimorphism by morphometric analysis done on OPG among Sriganganagar population.
下颌骨是一种具有二态性的致密骨，这使其非常耐用，并且在大规模灾难中能很好地保存下来用于人员识别。下颌支的形态测量可通过全景曲面断层片（OPG）或干燥下颌骨用于性别判定。
通过对来自斯里甘加纳加尔人群的200例患者的数字化OPG下颌支进行形态分析来确定性别。
本研究对从日常门诊使用CS8000C机器随机选取的200例年龄在21至70岁之间的男女患者的数字化OPG进行。由一名颌面放射科医生独立对下颌支进行两次形态分析（最大支宽度、最小支宽度、髁突高度、支的投影高度和冠突高度），间隔1天，取两者的平均值。收集的数据制成表格，并使用SPSS软件20版通过独立t检验和判别函数分析进行分析。
在总共200名受试者中，37%为男性，63%为女性。男性的最小支宽度、最大支高度和支的投影高度的平均值明显更高，而女性的最大支宽度略高。从下颌支确定性别的总体准确率为77.6%，而确定男性和女性的准确率分别为78.4%和76.8%。
在斯里甘加纳加尔人群中，通过对OPG进行形态分析，下颌支可用于性别二态性判定。
